[Boatanchors] SI units and the rest
WA5CAB at cs.com
WA5CAB at cs.com
Tue Nov 16 19:21:30 EST 2010
I'm curious as to why it isn't 1/(3*10^8).
In a message dated 11/16/2010 11:39:45 AM Central Standard Time,
w7qho at aol.com writes:
> The original definition of a METER was based on a measured standard
> bar. The standard was redefined in 1983 as the distance traveled by
> light in a vacuum during a time interval of 1/299,792,458 of a
> second, The standard kilogram is a a cylindrically shaped platinum-
> iridium slug and is the only SI unit still defined by an artifact
> rather than a fundamental physical property that can be reproduced in
> different laboratories.
>
> Dennis D. W7QHO
> Glendale, CA
Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480
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